InstructionsTo be sure stickers are well stuck on in the exact place you have chosen, we advise to accurately clean the touching surface (also by alcohol).After that, wet the surface with water and neutral soap and fix your sticker.While doing this operation, be careful that no foreign particles settle on the wet surface to avoid the sticker does not stick well.As soon as you find the right position, let it dry checking that no air bubbles grow on the sticker.Wait 3-4 hours, then check again that there are no bubbles, taking away with fingertips those that may have formed (you can use a pin as well, if necessary).Still wait some hours before using the bike again.